Hi, I have used the NXT Mindstorms for years and would have my class write code for BT and control the bot with another brick with the buttons. They had to turn BT on, read mailboxes, use nBTCurrentStreamIndex, etc. I now have a set of EV3s and cannot find anyway of doing the same type of exercises. Are those options not longer available? Any suggestions. the exercise was to teach at some low level about BT and communicating without it being done "blackbox" for them. Thanks for any...

This is a new issue on my laptop. Previously, RobotC worked on my current device, but I reset my laptop and so reinstalled RobotC. Now, everything is fine until I hit "Download to Robot" or try and update the firmware. It pops up the dialog box that says "Downloading", but freezes at 0%. It will stay there forever, and if I try and click on cancel, Windows pops up the "not responding" box. I've uninstalled and reinstalled three times now, and get the same error...

We are using new EV3 robots with RobotC and Windows 10 computers. I have had two different groups pf students receive this error message: "an unnamed file contains an incorrect path" There are no other files open and the current program has been named. We are forced to use the task manager to quit the software, as it is unresponsive. The software will then work fine afterwards, but this error message is annoying. Any help you can provide is appreciated!

Can anyone tell me if the same text-based programming language that we have used with the NXT's and RobotC, will still work with our new EV3's? Language such as: motor = 50; motor = 50; wait1Msec(3500); I opened up a sample program that came with the curriculum and it looked different than what we are using in terms of how things are written. I just want to be prepared! Thanks!

whenever I try to download a program when Robot Virtual Worlds - Curriculum Companion is selected, from either RobotC or Graphical RobotC I get an error Failed to load mono and the following details: mono: function mono_class_get_userdata_offset not found mono: function mono_class_get_userdata not found mono: function mono_class_set_userdata not found mono: function unity_mono_method_is_generic not found mono: function unity_mono_method_is_inflated not found mono: function...

I have two different sets of students who are trying to download the following code: nMotorEncoder = 0; nMotorEncoder = 0; nMotorEncoderTarget = 720; nMotorEncoderTarget = 720; motor = 50; motor = 50; wait1Msec(5000); The robots did move exactly two revolutions forward at 50% power, but instead of waiting in place for the remainder of the 5 seconds, the robots will start turning in place. It makes no sense because we have tried replacing the brick; downloading the firmware, changing what...

I am baffled at to why the following code won't run as it should. nSyncedMotors = synchBC; //Synch motors B & C, B is the master nSyncedTurnRatio = 100; //the wheels will be 100% synched motor = 50; //the robot’s power level is 50% wait1Msec(5000); //the robot will move for five seconds What is happening is that the robot is turning in a circle instead of moving straight ahead. I have tried turning off PID and then turning it back on. I have reloaded the firmware. I have checked connections...

when I was in high school, the teacher taught me how to make a robot. A year later, I have learned C#, Visual basic, HTML, and CSS. What is the name of language is this software using? For example: Java I was using VEX EDR, Thank you.

Using RobotC Version 4.56 and VW In The Zone version 1.0.0. 1. The RVW Scissorbot does not display the claw that picks up the cone when the program runs. There is a black spot behind the robot. 2. The RVW Fantasticbot does not display at all when program runs.

I have an NXT 2.0 system, that I haven't touched in months. Today, I decided to tinker with it. I downloaded and installed Robot C 4.55. I applied the included firmware to the NXT. But, the ultrasonic sensors are returning a value of -- no matter how far away a solid object is. Running "Try Me" shows a value of too. I tried reverting the firmware back to the stock Lego firmware and running "Try Me" again. With the Lego firmware I get a value of I tried switching wires,...

My EV3s are currently running RobotC with RobotC firmware. Is it possible to install the original LEGO EV3 firmware on one of these units? Do I need any special software to do this? Thanks for any help.

I have multiple cortex systems. I am having an issue connecting two of them to the computer to configure and compile. I have switched computers, switched usb ports, switched usb cables, all to no effect. Here is the message that I am getting: "No Communication link available to PC Device" It will not even allow me to download firmware. I am getting a steady green flashing light on the "Robot" led on one of them, and a steady flashing green light on the robot / fast flicker...

Is RobotC wifi known to work where I could download programs from a Windows 7 PC to the EV3 brick? I have the Netgear USB adaptor. I find my network from the EV3 and connect to it. I find the brick on WIFI from RobotC. RobotC says to select the device, I highlight it. It is not intuitive what happens next?

Good evening, I have one computer where the compiler errors window is not showing up. I can go to the appropriate menu and choose the "Compile Errors View" and nothing happens. I am assuming that a student did something within the software of RobotC to not allow this window to show up. Can you give me something to try to allow my students to see this errors window? Thanks!

I am trying to get an in-depth understanding of RobotC (EV3) and would like to know where all functions and variables, etc are defined. I have gone through all the .h files in the includes and most in the system files. Is there a list somewhere of all the files that are included in a compile. For instance I have not been able to find 'getxbuttonvalue' ,'xbuttonany' other intrinsics and a whole bunch else. I don't want to bug people about each and every thing so I'd just like to build up a...

Mea Culpa - Once I read, and understood, some code and changed the way I was doing the includes, and compiler settings. It compiled and test1 works like a charm. I'm sorry for all the confusion and posts. I will do better in the future. Thank you all for your patience. I am assuming that I need to programmatically replace the push button code. Ed ************************************************* I am still attempting to use the above sensor.( See earlier revised post below) In RobotC there is...

RobotC was previously running and the kernel had been downloaded etc. I uninstalled RobotC due to communication difficulties. I the reinstalled it. When attempting to download the kernel I get- "Unable to open a communications link to the robot" with NO ERROR NUMBER. Windows shows the device. Note even in the previous install I have never been able to download a program to the EV3. In Mindstorms everything works perfectly. Robot C 4.55 (9110) F/W 10.55 Solution Evidently RobotC...

I have used the mindstorms for many years with RobotC 3.x but am now replacing class set with EV3's. I was trying out the gyro with sensorType = sensorEV3_Gyro. It sets up fine on the debug window and I can step thrugh the sensorType and watch the degrees changing. When I try to reset it with resetGyro(S2)and I step through, the mode is "angle" when it sets the type. i can turn the gyro and see the angle changing on the debug window. When i step through resetGyro(S2) Mode changes to...

I noticed that in ROBOTC there are the functions: LED_ALL LED_RR LED_LL etc... which should serve to control separately the left and the right led on EV3 Brick. is it possible to use them, perhaps by inserting an assembly code (asm) in the program written in ROBOTC Thanks

I used this program for the robot Starkicker but instead of only going backward a little bit, it goes backward until it hits the wall. I have no idea why can someone please help me. I am using virtual worlds

Hi, I want to share my project below that helped me to get into the wonderful world of robotC with EV3 hardware. I am adding the source code below. Feel free to use it for noncommercial usage. Mail me for any question. operation: EV3 being used here as a tool to measure a table size with one color sensor and a gyro. Measure results are sent into the PC debugger. Detailed explanation is inside the code header. Enjoy, Amit ***********************************************************************...

1) If you are getting an error, please tell us what error you are getting and what he message says. When compiling, got the following error message: *Warning*:Invalid '=' operation for types 'type_t' and 'char' *Warning*:Invalid '=' operation for types 'type_t' and 'char' 2) Give us the version of ROBOTC you're using 4.55 (9110) (F/W 10.55) 3) Give us the platform type (NXT, VEX CORTEX, etc.) VexIQ 4) Describe the issue as best as you can Compiler is not aware of allocating and initializing a...

Hello, I need help with programming a servo using a Vexnet joystick. The servo, we are using is a Futaba S3003. I'll have to program two buttons for a servo, therefore one button would go to a certain degree and then the second button would return the servo back to it's original position. I just need a sample program to go off of, since I cannot find anything on the internet to go off of. Any advice to how to program it would be helpful too. -Thank you

We have attached the external shaft encoders. We have also downloaded the sample program called, 'Forward for Distance'. Everything seems to be configured properly, yet the sample program will not run on the robot. Any ideas how to get the program to run? Thanks!

I have been having my students really get into the programming with RobotC for the VEX. I like to make up challenges which reinforce a particular concept. The current challenge is for students to move toward a mostly empty water bottle, pick it up and place them on top of a 2x4. Four 2x4's enclose the arena area in the shape of a square. Some of the problems we have been having focuses around a robot running a piece of code correctly until a certain point. When a piece of code doesn't work, it...

We have two different robots, whose clawbot motors seem as though they are working fine, but at times will not open the claw as directed in the program. Yet, if we listen, you can hear the motors still trying to work even though they are not opening the jaws of the claw. Any ideas? I am assuming that if the built-in circuit breaker had tripped, one would not hear the motor still trying to work.

There is a new Meccabrain firmware update. This is for the G15, g15ks, 2.0 and 2.0xl The new firmware has added 4 new modes/commands: 1. Game mode, hours and days of fun for your family and friends !! (this is one of the best trivia game that I have ever played, it seems to have several 100 persons, places and things, The voice recognition is very good (90% correct). You can have up to 4 players) 2. Dance with me mode (interactive) 3. Hug me mode (just ok, but kids will love it) 4. the 4th one...

Hi .. I installed 4.55, but the "About RobotC" still says it is 4.54. I have not got around to test to see whether it is just the About robotc simple display issue, or still not installed. I guess I have to test out one of the fix supposed to be in RobotC to see it is really 4.55 or 4.54. Before I do that, I wonder anyone has the similar issue. Also, I recall I saw "switch/case" availability in the graphical version.. but it is not there. Hmmm...

FailingAuto1 359.txt We have created a problem using the variable feature. This is a very useful feature. My programmer wanted to skip creating Motor/Setup by saving his Teleop program, deleting all the program - including a number of variables, switching to Autonomous and writing his auto program. He did not go into variable edit and delete the variables. After writing part of the program including defining a number of new variables, he compiled the program and received a number of...

I did this in LIM mode, this was longer then 2 min., so I had to string 2 LIMs in the video. I changed the voice to +30% pitch to sound more like MeccaNoid. This was fun for me, I love Star Wars. ~~~~~~ SPOILER - if you did not see the movie, click on this ~~~~~~

I am a middle school teacher with 24 laptops running RobotC Graphical 4.5. I do not want to load the Beta version (4.53) to the school computers. Will the official version be out soon? I use July and August to update equipment and software. Thank you Alan Kinnaman

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